Function useScoreboard

useScoreboard(game: Game): UseScoreboardResult
Manages scoreboard state for the GM view.
Parameters
- game: Game
  The active Game record. Only game.id is used for DB queries.
Returns UseScoreboardResult
Sorted entries, the adjust callback, and a suggested increment step.
Remarks
- Loads players (and teams in team mode) from IndexedDB on mount.
- Provides UseScoreboardResult.adjust to apply manual +/− delta to a player or team.
- Emits a SCORE_UPDATE transport event after every adjustment so players see live scores.
- In team mode, adjusting an individual player's score also recalculates and persists the parent team's aggregate score.
- Scores are clamped to a minimum of 0.
Example
```
function Scoreboard({ game }: { game: Game }) {
  const { entries, adjust, defaultIncrement } = useScoreboard(game)
  return entries.map(e => (
    <div key={e.id}>
      {e.name}: {e.score}
      <button onClick={() => adjust(e.id, e.kind, defaultIncrement)}>+</button>
    </div>
  ))
}
```
- Defined in src/hooks/useScoreboard.ts:58